Train-air-blowing machine



March '15, 1927. 1,621,025

J. M. POTTER TRAIN AIR BLOWING MACHINE Filed July 1', 1925 Z-S heetS-Sheet 1 1,621,025 J. M. POTTER TRAIN AIR BLOWING MACHINE March 15, 1927.

Filed July 1, 1925 2 Sheets-Sheet 2 J/ZPoZZer Patented Mar. 15, 1927.

mari ara-Brownem dame.

Application filedliluly 1,- 1925. I semantic." mew.

This invention relates to certain improvements in -trainair blowingmachines and it is'anlbbject of "the invention to-providea ma'chin'e"o't" this'general character :Wherein the ni-aiiiinunr amount-of air will be expelled with a 11 iini' 1nu1n 'ZUHOUIltOfPOWGI.

Another bbje'ct'ot the invention is to pro- 1 vide a 'devi'ce'ot this general character constructed in a-1nanner whereby the movable -parts will operate with I a minimum of tric-v tional resi's t-ance and wherein th'eblastvef; air created by a driven fan Wlll be expelled with increased volumeand velocity by a 'larger fan -propelled by the fi rstvnained i'fan; said second =r larger fan nbeing unbalanced u'vhe'rebythe dischargeof air will belin pails idue'to' the' increase of velocity on the'devvn- Ward rotation of the heavier portion efthe unbalanced-fan. v

The invention consists in thedetails. of construction and in the combination; and; errangement' ot theseveral parts ot my improved train air blovviin'g machine whereby certain important advantages 'fl-I'Bs "attained and the device' rendered simplenwless expensi've 'and other-Wise more convenient and advant'ageous for "use,- as will 5 be hereinafter r'nore iffilly setiorth; c

i The novel "features of my invention Will hereinafter be :de'fini'telyclaimed;

In order that my invention 1 may be *the better understoochijl will now: proceed to describe the sarnezvvitlrreference to the "accompanying drawings;wherein':'-

'Figure 1 's a view Yin side elevation illustrating 'atrain air blowinglvma'ehine 2 constructed i11 accordance with an embodiment army invention;

Figure Q' is anenlarged-sectional View taken substantially-on the .line2;2 of Figure l;

*Figure 3 is-an enlaiged' sectional view taken substantially onwthe line 3-:3' ofuF'igureil;v p

uF-igure A dean-enlarged. vertical; sectional view'ntaken longitudinally through? the machine a'sli'llustrated-in Figure 1.

' 'As tlisclosediinthe accompanying draw- ,ings, 1 denotes (base; ineniberi of: requisite dimensions and conligurationiqte WhlQlUzlS suitably s'e'cured, as eat l, the supporting members 3 for the lower casings AF'andB. The casing A is considerably smaller than the casing and is-'-' suppontd above the axial center of the casing B, the peripheral Wall 4 of the casing A having leading from I tits lower:portiona.- conduit :5 tin communica- =tlon w th the Jargeri'casing ?B tha'ough'r-ithe y-peripheral wan =6: thereof. In comm unlc'ation with lthevlower; iportioniof the 'c-asingrB througlr the peripheral "-wall 6 thereof an outlet conduit 7 disposedin; ageneraliwdirection toward the casing A. Each of the-"easlatiorr -byi thetierods 8. Q

* Garriechby one head 9 rotfthe casing A is 1 an outboard xbiearing "l0 q'provi'dingra moi nting:forwthe shaft '11, said; sh-akft'ibeing disposed 'through the'icasing' A. anduh v'ilig its; opposite end ,port-io'n rotatably Supported by the ineinbei o'r strip :12 securedZItolthe second head ;9 et theicas'iiigA and disposed radially across-the adj-agentFairv inlet-wiper? ing 14. It is to be undersit'oodfithatTthewfirst namedlhead-"9 is also Pl OYld GdQN Vith a similar air inlet sopening,"bcthfiofqsaid: openingsil i ybeing concentric'to thessha tt llfiMofiiited upon the Y extended portion of the ishaift 11 is a fixed pulley 15-.and. allcose pulley; 16 with which is adaptedvto -ac'oalct 1in} awv'vell known manner ill. driive belt leading'- from a suitable :source of power, "It is? t0;:be stated :at this 1 a time l-thilt yrneans ma nice lemployedi for draining! Ethe sh-aft 1; 1. ;}-Itl {isealfso vto' the noted that f the ishaftj llrg-is i'proivi ded withaisuitable anti-{friction means'l'kcoaf'cting Withthe outboardzbearing -ilOr -and then-nember or-EStripw12-so that .thei sha ft ll-z-Willd'btate' withaininiinunr oft ctijonat resistance. .l Fixedto the:slratt llvwithiir tlieiMSiHgEA aand innnediately r adj acent to the: heads :19

thereof are the collars oi hubs ,18 from. high radiatehthe arms: 'l 9fthe 1outen extfemitiesiol {which being I riveted .or: otherwiseasecuredto the inner. faces of the annular; sicleiplates 20, "the central opening-21 ot each of.- saidsrside plates, as herein ljdisclosed,-; being oi aldia n- 'eter slightly larger than that of-theiadjacent Disposed through th'e axi l center;(oi the I casing B and rotatably supp0rted' bynthe heads 23 is a shaft 24 having coacting therewith the anti-friction means 25 whereby said r tenure shaft rotates with a minimum of frictional resistance. Mounted upon the shaft 24 within the casing B and substantially bridging the space between the heads 23 thereof is a drum 26. Radiating from the drum 26 is a series of circumferentially and equidistantly spaced blades 27 radial to the shaft 24 and which extend immediately adjacent to the peripheral wall 6 of the casing B. The side edges of the blades 27 are connected by the annular plates 28.. The outer end portions 29 of certain of the blades 27, preferably -one half of such blades, are of increased weight so that the fan afforded by the drum 26 and thehblades 27 is of an unbalanced yp i i he blades 22 in the casing A are caused to rotate at the desired speed and in a direction to force the air draft through the conduit into the casing B and the impact of such air blast upon the blades 27 will cause the same to rotate in the direction indicated by the arrows at and the requisite rotation of said blades as a unit is facilitated at intervals by the added impetus given by the blades 27 of increased weight as the same travel downwardly.

An air blowing machine constructed as hereinbefore described results in the expelling of an increased amount and velocity of air when the power required only operates a fan of a relatively small size.

In view of the-foregoing it is to be understood that the fan mechanism within the casing B may be termed a momentum fan. F rom the foregoing description it is thought to be obvious that a train air blowing machine constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it maybe assembled and combination, two fan casings of different sizes in communicationone with the other, fans of different sizes mounted wlthin the casings, and means for driving the smaller fan to direct an air blast upon the larger fan, said larger casing having a discharge openlng. 7

3. An air blowing machine comprising, in combination, two fan casings of different sizes in communication one with the other, fans of different sizes mounted within the casings, and means for driving the smaller fan to direct an air blast upon the larger fan, said larger casing having a discharge opening, certain. of the blades within the larger casing being of a weight greater than the remainderiof such blades.

4. An air blowing machine comprising, in combination, two fan casings of difierent sizes in communication one with the other, fans of different sizes mounted within the casings, and means for driving the smaller fan to direct an air blast upon the larger fan above the axial center of said larger. fan, said larger casing having a discharge opening, the communication between the casings leading from the lower smaller casing.

5. An air blowing machine comprising, in combination, two fan casings of different portion of the sizes in communication one with the other,

fans ofdifferent sizes mounted within the casings, and means for driving the smaller fan to direct an air blast upon the larger fan above the axial center of said largerfan, said larger casing having adischarge. opening, the communication between the casings leading fromlthe lower portion of the smaller casing, said communication being through the peripheral walls of the casings.

6. An-air blowing machine comprising, in combination, two fan casings of different sizes in communication one with the other, fans of different sizes mounted Within the casings, and means for driving the smaller fan to direct an air blast upon the larger fan above the axial center of saidlargerfan, said larger casing having a. discharge opening, the communication between the casings leading from the lower portion of the smaller casing, the delivery opening of the larger casing being at the lower portion thereof.

7. An air blowing machine comprising, in combination, two fan casings of different sizes in communication one with the other, fans ofdifferent sizes mounted within the casings, and means for driving the smaller fan to direct an air blast upon the larger fan above the axial center of said larger fan,

said larger casing having a discharge; opening, the communication between the casings leading from the lower portionof the smaller casing, the delivery opening of the larger casing being at the lower portion thereof and through the peripheral wall of said larger casing.

In testimony whereof I hereunto affixmy signature. 1

JOSHUA MILLER POTTER. 

